American Public Health Association, “Standard Methods for the Examination

American Public Health Association, Standard Methods for the Examination of Water and Waste Water, 16th edn. 

APHA. 1992. American Public Health Association. Standard methods for the examination of water and wastewater. 18th Edition. Washington, DC American Public Health Association. 

American Public Health Association. Standard Methods for the Examination of Water, Sewage and Industrial Wastes American Pubhc Health Association, American Water Works Association, Water Pollution Control Pederation Washington, DC, 1955. 

The present standard condition of 20 °C was incorporated into the BOD method by the American Public Health Association Standard Method Committee in 1936 in the eighth edition of Standard-Methods for the Examination of Water and Waste-water. 

Method 3500-Mg D as published in Standard Methods for the Examination of Water and Wasteveater, 18th ed. American Public Health Association Washington, DC, 1992, pp. 3-73 to 3-74. 

L.S. Clesceri, A.E. Greenberg and A.D. Eaton (Eds.), Standard Methods for the Examination of Water and Wastewater, 20th Edn, American Public Health Association, Washington, DC, 1998, pp. 5-47, (5540 C, Anionic Surfactants as MBAS) and pp. 5-49 (5540 D, Non-ionic Surfactants as CTAS). 

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